DOS ain't dead

Working solution for HW Sound Blaster emulation for newer PC (Emulation)

posted by Japheth , Germany (South), 02.10.2018, 10:29

> you mean that when VME is used by JEMM then the v86-monitor run a bit
> different way that conflicts with DSDMA tampering approach while if VME is
> not used it do it correctly? The DSDMA.EXE is dated 13.5.1999 maybe that

VME in Jemm is used only to provide a "shortcut" for most (software) interrupts in v86 mode, because it avoids the cpu having to switch to ring0 protected-mode.

The "virtual interrupt"-stuff isn't used at all and isn't needed, because the v86-code runs CLI/STI/INT/IRET/PUSHF/POPF instructions in full speed.

> I didn't tried it with a
> realmode game as I don't remember one that use SB and run realmode.

Keen 4 for example.

---
MS-DOS forever!

Complete thread:

• Working solution for HW Sound Blaster emulation for newer PC - RayeR, 29.09.2018, 18:48 (Emulation)
  • Working solution for HW Sound Blaster emulation for newer PC - Japheth, 30.09.2018, 14:27
    • Working solution for HW Sound Blaster emulation for newer PC - RayeR, 30.09.2018, 22:12
      • Working solution for HW Sound Blaster emulation for newer PC - RayeR, 01.10.2018, 22:25
        • Working solution for HW Sound Blaster emulation for newer PC - Rugxulo, 02.10.2018, 02:38
      • Working solution for HW Sound Blaster emulation for newer PC - Japheth, 02.10.2018, 10:29